Widespread origins of domestic horse lineages
Widespread origins of domestic horse lineages
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DOI：
10.1126/science.291.5503.474
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发表时间：
2001-01-19
期刊：
影响因子：
56.9
通讯作者：
Ellegren, H
中科院分区：
文献类型：
--
作者：
Vilà, C;Leonard, JA;Ellegren, H
驯化需要控制野生物种，通常被认为是一个仅限于有限区域和文化的复杂过程。先前对几种家养物种的 DNA 序列分析仅表明了有限数量的起源事件。我们分析了 191 匹家养马的线粒体 DNA (mtDNA) 控制区序列，发现母系具有高度多样性。对考古遗址和晚更新世沉积物中的马科动物的序列分析表明，这种多样性并不是由于突变率加快或古代驯化事件造成的。因此，马的mtDNA序列多样性意味着母系前所未有的广泛整合以及野马的广泛利用和驯化。然而，核标记的遗传变异在马品种之间有所不同，可能反映了性别偏见的传播和繁殖。
Domestication entails control of wild species and is generally regarded as a complex process confined to a restricted area and culture. Previous DNA sequence analyses of several domestic species have suggested only a Limited number of origination events. We analyzed mitochondrial DNA (mtDNA) control region sequences of 191 domestic horses and found a high diversity of matrilines. Sequence analysis of equids from archaeological sites and Late Pleistocene deposits showed that this diversity was not due to an accelerated mutation rate or an ancient domestication event. Consequently, high mtDNA sequence diversity of horses implies an unprecedented and widespread integration of matrilines and an extensive utilization and taming of wild horses. However, genetic variation at nuclear markers is partitioned among horse breeds and may reflect sex-biased dispersal and breeding.